Owner's manual
52
B =
= A + Bx
Sum Sub-menu ( (STAT) (Sum))
Var Sub-menu ( (STAT) (Var))
Select this menu item: When you want to obtain this:
Sum of squares of the X-data
Sum of the X-data
Sum of the squares of the Y-data
Sum of the Y-data
Sum of products of the X-data and Y-data
Sum of cubes of the X-data
Sum of (X-data squares X Y-data)
Sum of biquadrate of the X-data
Select this menu item: When you want to obtain this:
n
Number of samples
Mean of the X-data
Population standard deviation of the X-data
Sample standard deviation of the X-data
Mean of the Y-data
Population standard deviation of the Y-data
Sample standard deviation of the Y-data
nxyxy
•
–
•
nx
2
x
()
2
–
-------------------------------------------------
r
nxyxy
•
–
•
nx
2
x
()
2
–
ny
2
y
–()
2
+
•
-----------------------------------------------------------------------------------------------------=
x
ˆ
yA–
B
------------=
y
ˆ
x
2
x
y
2
y
xy
x
3
x
2
y
x
4
x
xσ
n
xσ
n 1–
y
yσ
n
yσ
n 1–